How to find the executable files in the current directory and find out their extensions?

Question

I need to find all executable files from /bin. How to do it using

find . -executable

and how to check if the file is script (for example, sh, pl, bash)?

Answer 1

#!/bin/bash                                                                                                                                                    

for file in `find /bin` ; do                                                                                                                                   
    if [ -x $file ] ; then                                                                                                                                     
        file $file                                                                                                                                             
    fi                                                                                                                                                         
done

and even better to do

find /bin -type f -perm +111 -print0 | xargs -0 file

Answer 2

find /bin/ -executable returns all executable files from /bin/ directory.

To filtering extension there are usable -name flag. For example, find /bin/ -executable -name "*.sh" returns sh-scripts.

UPD:

If file is not a binary file and do not have extension, it's possible to figured out it's type from shabang.

For example find ~/bin/ -executable | xargs grep --files-with-matches '#!/bin/bash' returns files from ~/bin/ directory, which contains #!/bin/bash.